Latch.



Patented nee. I7, |901. w.. H. TAYLOR. l

uren.

(Application :Bled Aug. 20, 1901.)

(lo Model.)

INI/ENTOR WITNESS/5S UNITED raras ATENT FFICE.

VARREN II. TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE 85TOIVNE MANUFACTURING COMPANY, OF STAMFORD,

CONNECTICUT.

LATCH.

SPECIFICATION forming part of Letters Patent No. 689,334, dated December1'7, 1901.

Application led August 20, 1901. Serial NO- 72|63l- (N0 111011811).

T0 @ZZ whom, t 'may concern/s Be it known that I, WARREN I-I. TAYLOR, ofStamford, in the county of Fairfield and State of Connecticut, haveinvented certain new and usefullrnprovements in Latches; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in latches; and it consists in abolt, a cam adapted when moved in either direction to retract the bolt,and a movable locking-dog interposed between the cam and bolt andadapted to be moved to hold the bolt in its retracted position when thecam is moved in one direction.

My invention further consists in the parts and combinations of parts, aswill be more fully described, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a plan view of the lock, thefront of the casing being removed and the latch-bolt shown in its normalposition. Fig. 2 is a similar view showing the latch-bolt retracted, butnot locked; and Fig. 3 is a viewV showing the bolt retracted and locked.

A represents the latch-casing, and B vthe knob, the spindle C of whichis mounted in the casing in the usual or any approved manner. Secured tothe spindle C within casing A is the laterally-projectinglatch-retracting cam D, having arms 1 and 2, so arranged with relationto the follower-E, rigidlysecured to the inner end of the latch-boltstem 3, that when the knob is turned in one direction the arm 1 engagesthe follower and retracts the bolt 8 and when turned in the oppositeAdirection the arm 2 engages the follower and retracts the bolt. Thestem 3 of the' bolt passes through the plate 5, supported against thestuds 6, the plate 5 forming a seat for one end of the spring '7, whichlatter tends to normally hold the bolt 8 in forward position.

Pivotally mounted on a stud 9, secured to the casing, is the bell-cranklever 10, one end of which rests adjacent to the front edge of theretracting-cam, while its other or hook end rests adjacent to the boltS. The front face of retracting-cam is provided in rear of arm 2 with arecess 1l, the lip 12 adjacent to the outer edge of said recessprojecting sufficiently to engage the rear end of the bell-crank lever10 when the cam is turned in a direction to cause its arm 1 to engagethe follower E. When the knob is thus turned, the engagement of arm 1with follower E retracts the bolt. As the bolt approaches the limit ofits inner movement the lip 12 engages the inner end of lever 10, and acontinued movement of the knob turns the bell-crank lever on its pivotand causes the hook 14: on the lever 10 to engage the stud 15, formedintegral with the bolt 8, and hold the boltin its retracted positionuntil released by turning the knob in the opposite direction. With theforegoing construction it will be seen that when the knob is turned in adirection to bring the arm 2 of the retracting-cam against the followerthe bolt will be retracted, and upon being released will shoot out, asusual. When, however, the knob is turned in the opposite direction andwith a slight additional force, it will cause the pivoted hook to engagethe stud at the baseof the bolt and hold it retracted until the knob isagain turned in the opposite direction.

I have shown the bolt with hook-engaging studs on its opposite faces, sothat the latchbolt may be reversed for right and left hand doors.

It is evident that changes in the form andv construction ofthe severalparts might be made' without Aavoiding my invention, and hence I wouldhave it understood that I do not restrict myself to the particularconstruction and arrangement of-parts shown and described; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a latch, the combination .with a bolt and a cam adapted when movedin either direction to retract the bolt, of a pivoted lever interposedbetween the cam and bolt and adapted when the cam is moved in one direc-Y tion, to lock the bolt in its retracted position.

2. In a latch, the combination with a bolt and a cam adapted when turnedin either direction to retract the bolt the said cam hav- IOC xo ing-doginterposed between the 'cam and bolt and adapted to be moved to hold thebolt in its retracted position when the cam is moved in one direction.

ln testimony whereof I have signed this specification in the presence oftwo subscrib- I5 ing,r Witnesses.

WARREN H. TAYLOR. Witnesses:

SGHUYLER MERRITT, HENRY C. TAYLOR.

